Window frame construction



March 1940- F. J. ROBINSON 2,192,775

WINDOW FRAME CONSTRUCTION Filed Dec. 23, 193"! 2 Sheets-Sheet 1 /0 I B mr /2 \Q" I I E- Z [N VENTOR TORNE Y March 5, 1940. J. ROBlNSON 2,192,775

WINDOW FRAME CONSTRUCTION Filed Dec. 23, 1937 2 Sheets-Sheet 2 TORNEYPatented Mar. 5, 1940 UNITED STAlEfi This invention relates to windowconstruction and in particular to parting strips, weather strips andmetal lining for double hung wood sash and frames therefor.

The sealing of the joints between double hung sash and the window framein which they are slidabiy mounted and the lining of wooden windowframes to provide substantially frictionless surfaces against which sashmay slide without binding has become essential in every home because ofthe insulating value of weatherstripped windows and because of theconvenience of the easy opening and closing of the said slidable sash.However, in many instances a builder is forced to economize at the timethe house is constructed and the installation metal Weatherstripping andmetal window frame lining is deferred to a later date.

In construction where Weatherstripping and metal window frame lining isnot used, a wood parting strip is provided which is positioned in agroove in the window frame. Later, when metal Weatherstripping isinstalled, the wood parting strip must be removed to permit the removalof the wood sash and installation of the Weatherstripping after whichthe said wood parting strip is replaced if not too badly damaged by itsremoval. or a new parting strip is installed. If the window frame is tobe completely metal 0 lined, the parting strip is removed and the groovein the frame which originally accommodated the said parting strip isfilled before installing the said metal lining which generally includesa metal parting strip. All of the foregoing is expensive 35 and timeconsuming especially after the original wood frames and double hung sashhave become weathered and warped.

. In the usual Weatherstripping a rib is generally formed which extendsinto a. suitable saw cut or m kerf in the edge of wood sash. The saw cutor kerf in the sash is generally larger than the Weatherstrip rib toadmit of the said sash moving freely with respect to the said rib. Ifthe saw cut or kerf in the sash is too large with respect 5 to theWeatherstrip rib, then the weather stripping is inefficient. If the sawcut or kerf in the sash is too small with respect to the Weatherstriprib, then the sash binds when slid along the said rib. Too often thesash immediately after 60 Weatherstripping slides freely with respect tothe Weatherstrip rib but in a short while warping of the said sashcauses undue binding and sticking.

Also, when rib type Weatherstrip is applied to window frames and sashafter a structure has 5 been completed and in use, it is necessary tosaw cut or kerf the edges of the sash which cannot be done with positiveaccuracy because of the fact that the sash generally has been warped.

With the foregoing in view, it is one object of this invention toprovide a metal parting strip for double hung sash adapted to beinstalled on plank type frames which will facilitate the present orfuture installation of either metal frame lining or metalWeatherstripping or combinations thereof.

Another object of the invention is to provide the combination of a metalparting strip and metal window frame lining which, when installed in aplank type window frame in a manner herein described, will permit thesaid parting strip to be self adjusting with respect to normalirregularities and warping of the sash slidably mounted therein.

Another object of the invention is to provide the combination of a metalparting strip and 0 metal windowframe lining which when installed in aplank type window will provide a simple effective Weatherstrippingwithout the use of the usual Weatherstrip ribs and kerfs in the sashslidablymounted in said frame.

Another object of the invention is to provide the combination of a metalparting strip and metal ribbed Weatherstrip type window frame liningwhich is easy to install and which is self adjusting with respect to thenormal irregularities and warping of the sash slidably mounted within awood frame lined and weatherstripped thereby.

Another object of the invention. is to provide in double hung windowconstruction, the combination of a metal parting strip and metal ribbedWeatherstrip type window frame lining which accomodates itself toirregularities in and the warping of the sash slidably hung therein andwhich provides a resilient surface against which the said sash rideswhereby the efficiency of ribbed meta]. eatherstripping is materiallyincreased.

Other objects of the invention will become apparent by reference to thefollowing detailed description of the invention taken in connection 1with the accompanying drawings, in which:

Fig. 1 is a more or less diagrammatic View indicating a doublehung sashand frame with the invention applied thereto.

Fig. 2 is an enlarged detailed sectional view of a sheet metal partingstrip embodying the invention.

Fig. 3 is an enlarged detailed sectional view of an extruded metalparting strip which may be used in place of the sheet metal embodimentof the invention disclosed in Fig. 2.

Fig. 4 is a fragmentary horizontal sectional view taken on the line 4-lof Fig. 1 showing the installation of the parting strip disclosed inFig. 2 in a window frame ready to accommodate frame lining andweaterstripping at a future date.

Fig. 5 is a horizontal sectional View similar to Fig. showing a windowframe metal lined and with the novel metal parting strip disclosed inFig. 2 self-adjustingly retained in the said window frame by the metallining thereof, the said metal window frame lining serving asweatherstripping means.

Fig. 6 is a horizontal sectional view similar to Fig. 5 showing thenovel metal parting strip disclosed in Fig. 2 fixed with respect to thewindow frame and how metal window frame lining may be readily installedwith respect thereto, the said metal window frame lining serving asweatherstripping means.

Fig. 7 is a horizontal sectional view similar to Fig. 5 showing thecombination of the novel metal parting strip disclosed in Fig. 2 andmetal rib type Weatherstrip window frame lining with the said partingstrip s-elf-adjustingly retained in the said window frame by the metalrib type Weatherstrip frame lining.

Fig. 8 is a detailed sectional view taken on the line 88 of Fig. 1showing how metal rib type Weatherstrip frame lining and metal fiatframe lining may be combined with the novel metal parting stripdisclosed in Fig. 2 to fully line the I head of a window frame.

Fig. 9 is an enlarged view in perspective showing in detail theconstruction disclosed in Fig. 7.

Referring now to the drawings wherein like numerals refer to like andcorresponding parts throughout the several views, the novel partingstrip IE3 shown in detail in Fig. 2 as well as frame lining andWeatherstripping used in conjunction therewith are all preferably formedof zinc, alu- -1ninum, copper, brass, bronze or other metal which willnot rust readily and which will constantly present a smooth surfaceagainst which wood sash may slide freely. The said parting strip II! isgenerally rectangular in shape with the base thereof formed to provide apair of outwardly disposed longitudinal slots II of a width to slidablyreceive an edge of metal frame lining or Weatherstripping andsufiiciently deep to permit the said lining or Weatherstripping tomaintain engagement within the said slots II and at the same time admitof adjustment between the said parting strip I and the edges of metalframe lining or Weatherstripping engaged in the said slots II. A-longitudinal space I2 is provided along the base of the said partingstrip Hi to permit wood screws or other fastening means, if used, to bedriven from the top thereof into a window frame without injuring thesaid slots II thereof. Apertures It may be provided through the top ofthe said parting strip II in alignment with the said longitudinal spaceI 2 in the base thereof to accommodate wood screws or other suitablefastening means when required.

Fig. 3 shows a solid metal parting strip I 00 similar to the sheet metalparting strip I0 disclosed in Fig. the said parting strip I00 beingpreferably formed by an extrusion process with a pair of outwardlylongitudinally disposed slots Illl therein at a distance above the basethereof substantially equal to the width of the said slots. The saidslots II!) in the parting strip I80 being of the same size and for thesame purpose as the slots II of the sheet metal parting strip I0hereinbefore described. The parting strip I 00 may be drilled andcountersunk as indicated by the numeral I30 in Fig. 3 to accommodatewood screws or other suitable fastening means.

Fig. 4 shows the use of the metal parting strip ID without the presentinstallation of metal window frame lining or metal Weatherstripping. Theupper sash I4 and the lower sash I are slidably mounted in a windowframe I6 with the parting strip ID positioned therebetween and securedto the said window frame I6 by such suitable means as the countersunkhead wood screws II. The upper sash I4 slides in a channel formed by theparting strip I0, the window frame It and a blind stop I8 while thelower sash I5 slides in a channel formed by the parting strip I0, thewindow frame I6 and the trim stop I9.

However, if metal window frame lining is to be installed when doublehung sash is first hung, the combination of metal frame lining with themetal parting strip ID as shown in Fig. 5 may be used. Referring inparticular to Fig. 5, a flat metal lining strip 20 having a flange 2|along one side thereof is urged against the window frame I6 and theblind stop l8, and the upper sash I4 is positioned in the said windowframe I5 against the face of the said metal lining strip 20 and theflange 2! thereof. The flat edge of the said metal lining strip 20 istelescoped into a Slot I! of the parting strip ID. A second lining strip22 having the lower sash I5 urged against the face and flange 23 thereofis positioned against the said window frame I6, and the fiat edge of thesaid second lining strip 22 is telescoped into the other slot II of thesaid parting strip Ill. The said lining strips 20 and 22 are preferablysecured to the frame I6 by such means as the wood screws 24.

It will be noted that the relation between the widthof the said liningstrips and the thickness of the sash which slide thereagainst is such aswill. permit the flat edges of the said lining strips to extend into.the slots II of the parting strip I0 short of the depth of the saidslots II whereupon the said parting strip II], which is held in positionagainst the window frame l6 by the flat edges of the lining strips 20and 22, will adjust itself to irregularities in the sash I4 and I5,compensate for slight inaccuracies in the installation of the said sash,and adjust itself to allow for shrinkage and warping of the sash andframe whereby to avoid binding and sticking of the sash within theframe.

It will be observed that the sides of the upper sash Id and the lowersash I5 are parallel to the frame It and that the base of the metalparting trip I 0 holds the lining strips 20 and 22 spaced away from theframe I5 and against the sides of the sash I 4 and I5 adjacent the saidparting strip I0. Also, there is no backing to the lining strips 29 and22 adjacent the said metal parting strip Ill. Thus, a resilient contactbetween the said sash I l and I5 and the lining strips 20 and 22 isestablished which serves as Weatherstripping and at the same timepermits the sash I4 and I5 to swell laterally without binding inasmuchas the lateral swelling of the sash I4 and I5 will merely deflect thelining strips 20 and 22 adjacent the said parting strip I0.

Although the installation of the metal lining 2i) and 22, the partingstrip I0 and the sash I4 and I 5 within the frame I6 has been describedto be accomplished in a particular manner or sequence hereinbefore, itis obvious that the said installation may be accomplished otherwise withlike and similar advantageous results.

For example, by referring to Fig. 6, the construction shown thereincontemplates the securing of the parting strip Hi in its proper positionby wood screws IT and tacking the lining strips 26 and 22 in position bybrads 25 or the like through the face thereof near the flanges 2| and 23thereof respectively. This means of fastening, though securing the saidparting strip from floating with respect to the said lining strips 20and 22, provides for free deflection of the said lining strips 2t and 22adjacent the said parting strip ill to prevent binding of the sash l4and I5 due to the swelling thereof.

The installation disclosed in Figs. 7 and 9 shows the novel partingstrip Ill combined with metal rib type Weatherstripping 26 and 21 havingribs 28 and 29 respectively. The upper sash M and lower sash i5 are sawcut or kerfed at 30 and 3| to receive the Weatherstrip ribs 28 and 29respectively. The saw cuts 3H and 3| are slightly larger than the saidribs 28 and 29 respectively to admit of free sliding of the sash l4 andI5 with respect to the said Weatherstripping 26 and 21 respectively. TheWeatherstripping 26 and 21 is preferably secured to the window frame Itby wood screws 2 t near the flanges 32 and 33 thereof respectivelyadjacent the blind stop It and trim stop it of the window frame l6. Theparting strip is retained in its free floating position by theweatherstipping 26 and 21 telescoped in the longitudinally disposedslots H thereof. As in the installations shown in Figs. 5 and 6, theWeatherstripping 26 and 2! contacts the sides of the upper sash I l andlower sash l5 only adjacent to the metal parting strip Ii! which holdsthe said Weatherstripping 26 and 21 spaced away from the frame I6adjacent the said metal parting strip Ill. The resilient contactprovided between the sash l4 and I5 adjacent the said parting strip itobviously increases the efficiency of the Weatherstripping 26 and 21 byproviding an additional positive contact surface between the said sashl4 and I5 and the said weatherstripping 26 and 21.

Fig. 8 discloses how the construction shown in Figs. 5 and '7 may becombined to provide weatherstrip type frame lining for the upper sash l4and flat frame lining 22 at the top of the run for the lower sash l5 atthe head I60 of the window frame I6.

Although but several embodiments and installations of the invention havebeen shown and described herein, it is obvious that many changes may bemade in the size, shape, details and arrangement of the various elementsof the inveni tion without departing from the spirit thereof as definedin the appended claims.

I claim:

1. In combination, a window frame, a blind stop and a trim stop securedto the said window frame in spaced relationship to each othen'laterallyspaced metal lining strips each having one flanged edge and one straightedge secured to the said window frame with the flanged edge of eachmetal frame lining strip oppositely disposed and positioned against oneof the said stops, and a parting strip disposed between sash slidablymounted in the said frame telescopingly engaged by the said straightedges of the said frame lining strips in lateral floating relationshipto the said frame lining strips and the said sash.

2. In combination, a window frame, a blind stop and a trim stop securedto the said window frame in spaced relationship to each other, laterallyspaced metal lining strips each having one flanged edge and one straightedge secured to the said window frame with the flanged edge of eachmetal frame lining strip oppositely disposed and positioned against oneof the said stops, and a parting strip disposed between sash slidablymounted in the said frame telescopingly engaged by the said straightedges of the said frame lining strips in lateral floating relationshipto the said frame lining strips and the said sash, the said partingstrip being adapted to hold the frame lining spaced from the windowframe adjiacent the said parting strip whereby to provide a resilientsurface against which the said sash may slide and laterally expand.

3. In combination, a window frame, a blind stop and a trim stop securedto the said window frame in spaced relationship to each other, laterallyspaced metal weatherstrips each having one flanged edge and one straightedge secured to the said window frame with the flanged edge of eachpiece of Weatherstripping oppositely disposed and positioned against oneof the said stops, and a parting strip disposed between sash slidablymounted in the said frame telescopingly engaged by the said straightedges of the said weatherstrips in lateral floating relationship to thesaid Weatherstripping and the said sash.

FREDERICK J. ROBINSON.

